Driving connection for type-bars.



No. 677,430. Patented July 2, l9,0l.

A. W. STEIGER.

DRIVING CONNECTION FOR TYPE BARS.

(Application filed Aug. 20, 1900.)

(No Model.)

l llllllllll l lfllllllllllllllum IIIILII FIIIIIIIIII1I lrjx/E qiur.

llwrran Srnras PATENT Orrrcn.

ANDREXV XV. STEIGER, OF BOSTON, MASSACHUSETTS, ASSIGNOB, BY MESNE ASSIGNMENTS, TO AUGUSTUS L. HOFFMAN, FREDERIO S. CONVERSE, AND FREDERIC J. LEACH, TRUSTEES, OF LYONS, NETV- YORK.

DRIViNG CONNECTION FOR TYPE-BARS.

forming part of Letters Eatent No. 677,430, dated July 2, 1 01- Application filed August 20, 1900. Serial Ne 27,421. (No modeL) To all whom, it 71mg concern: The drawings illustrating an embodiment Be it known that 1, ANDREW \V. STEIGER, of the invention show, in Figure 1, an elevaa citizen of the United States, residing in Bostion of a type-bar and link provided with my ton, in the county of Suffolk andState of Masjoint; Fig. 2, a like view in a different posisachusetts, have invented certain new and tion; Fig. 3, a plan of a fulcrum-plate with 55 useful Improvements in Driving Connections the bars in position.

for Type-13ars, of which the following, taken A series of radiating grooves a, are formed in connection with the accompanying drawin the fulcrum-plate b, and they are interings, is a specification. sected by a circular groove 0, within which is This invention in type-writers relates to the supported a wire d, upon which the type-bars 60 construction of the joint which forms the e are pivoted. For the purpose of swinging driving connection between the type-bar and the type-bar about its pivot cl I form a segthe link. In this class of machines there are mental bearing f in the type-bar, covering many jointed pieces arranged side by side, about a quadrant, and opposite the bearing 5 and as the space is limited it becomes a matf1 form a concentric guard g of greater radius 65 ter of some importance to make the joint as than the bearing f. From a thin sheet of thin as possible without diminishing its efiisteel I make alink h of equal thickness to the ciency. type-bar e and form at one end a pivot t', hav- To this end my invention consists in forming about double the circular surface of the ing in the type-bar, which is made from thin bearing f. Concentric with this pivot is a 70 flat steel, a segmental bearing and fittting segmental boss j of the same radius as the flush thereto the pivot of a link made ofi thin guard g and of substantially the same extent. metal, and I form on the link opposite the To give a powerful start to the type-bar, I pivot a concentric segmental boss which, in allow the link h when the parts are at rest to connection with a projecting guard on the touch the type-bar e along the line 7;, which 75 type-bar, serves to keep the pivot seated in in effect makes them one piece. At its exthe bearing. To prevent their lateral sepatremity the link is pivoted atl to the drivingration, I arrange the pieces in slots in the typecrank m. bar fulcrum-plate, which supports on a com- Normally the parts are as in Fig. 1. When 0 n1on pivot the series of type-bars. Another the operator strikes a key, the driving-crank 8o feature of this joint consists in providing a moves in the direction of the arrow. This starting leverage to overcome the inertia of cramps the pivot-bearing v} and falong the the parts greater than the traveling leverage line 71:, and the type-bar e is driven through for the typebar. Thisis accomplished by arthe radius (Z to Z. As soon as the bar is in ranging thelink so that itrestsin contact with motion the type-bar e and link h separate at 85 the type-bar, which prevents the link turning the line 717, the link h merely pulling on the in the type-bar until the type-baris putin mobearing f and i, and from this time the type tion by the driving-crank pivoted to the exbar will bedriven through the radius 61 to i, tremity of the link. During this interval the which imparts the rapid motion required to type-bar is driven with a radius equal to the effectively operate the type-bar. 9o

distance from the type-bar center to the con- Having described my invention, what I nection of the link and driving-crank. As claim, and desire to secure by Letters Patent soon as the type-bar starts the driving-center of the United States, isshifts from the extremity of the link to the 1. In a typewriter, a pivot-ed type-bar havpivot-bearing of the link and type-bar, with ing a segmental bearing and a link having a 95 the effect of putting the type'bar in much segmental pivot seated in the bearing, commore rapid motion, as this last center is bined with a segmental boss on the link conenough nearer the type-bar center to increase centric with and diametrically opposite to the the velocity ratio for equal driving-crank mosaid pivot and a segmental guard on the typetion about three and a half times. bar concentric with and diametrically oppo- 10c site to the bearing, a fulcrum-plate to support the pivot of the type-bar and grooves in the plate having walls adapted to maintain the link and bar in alinement, substantially as described.

2. In atype-writer, the combination with a link having a pivot, of a pivoted type-bar having an eccentric corresponding bearing and a guard to keep the pivot of the link seated in the bearing of the type-bar, means for preventing the link from turning on its pivot in the bearing of the type-bar when first pulled in the direction to start the type-bar but after the type-bar moves allowing free rotation of the pivot of the link in the bearing of the bar, substantially as described.

3. In atype-writer, a link having a permanent connection with a crank and a connection continuing but an instant after the key is touched with a type-bar to give to it a starting twist about its pivot through a long leverage and a permanent connection between the link and bar to apply the pull of the crank to the bar through a shorter leverage thereafter, substantially as described.

4. In atype-writer, a pivoted type-bar, a link pivoted to the type-bar and an actuating device pivoted to the link, combined with means to prevent the link from turning on its pivot in the type-bar until the actuating device has started the said bar from its position of rest, substantially as described.

5. In a type-writer, a link permanently jointed to a crank and a type-bar permanently jointed to the link, a separable contact between the link and bar that interlocks them to apply a momentary starting twist to the bar from the joint of the crank with the link, and means, acting upon separation of the link and bar at the separable contact, to transmit the pull of the crank entirely to the joint of the link with the bar, substantially as described.

In testimony whereof I have hereunto subscribed my name this 27th day of December, A. D. 1899.

ANDREW W. STEIGER.

\Vitnesses:

A. O. ORNE,

JOHN B. DALEY. 

